0636893402340

DEWALT

Model DH4240B

Internet #202066580

Store SKU #268912

Honda GX390 4,200 psi 4 GPM Belt Drive Gas Pressure Washer

$1,299.00 /each
  • Reliable high performance premium HONDA GX390 Engine
  • General Pump Triplex Plunger Pump
  • Steel-Braided Quick Connect high pressure hose

Frequently Bought Together

Product Overview

These DEWALT machines are guaranteed tough. Built tough to meet the rigorous demands of the cleaning professional or anyone who expects the most out their machine. Perfect for deck cleaning, wood restoration, paint preparation, graffiti removal and all other professional cleaning services. Our gas-powered machines are equipped with Honda GX OHV commercial series engines. These engines set the standard for durability and long life. The Honda engines are paired with AAATM industrial triplex plunger pumps, a brand with a history of over 40-years of innovation. AAATM pumps are equipped with PowerBoost, this patented technology delivers higher pressure to the spray nozzle, resulting in greater impact and cleaning performance. Exceptionally strong welded steel frame body and pneumatic tires for mobility across most any surface. Pro-style quick connect spray wands and nozzles, with professional spray gun, allows users to operate with ease. High pressure hoses are non-marring, kink and abrasion resistant and utilizes poly and/or steel-braid technologies for exceptional strength and long-life. For those extra dirty jobs, drop the detergent siphoning tube into pressure washer safe detergent and attach the soap applicator nozzle.

California residents: see   Proposition 65 information

  • Honda GX390 OHC commercial series engine with oil alert is easy starting, light weight and quiet, yet powerful - engine oil is included
  • AAA by comet industrial triplex plunger pump with ceramic coated pistons and adjustable unloaded for controlled pressure
  • Dual belt-drive system for longer pump and engine life
  • 3/8 in. x 50 ft. high pressure steel-braided hose is non-marring, kink and abrasion resistant and equipped with quick connectors
  • Pro-style spray wand with 5 quick connect nozzle tips- 0°, 15°, 25°, 40° and soap applicator nozzle
  • Professional spray gun designed to be comfortable and easy to operate - safety lock-out to prevent gun from being accidentally activated
  • Welded steel frame, steel engine plate, solid steel axle and 13 in. pneumatic tires for extreme durability and effortless maneuverability
  • Convenient on-board accessory storage for spray gun/wand, high pressure hose and nozzles
  • Downstream detergent injection system for convenient use of cleaners
  • Limited warranty - commercial use - 3-year on Honda GX engine, 5-year on AAA pump, 1-year frame components, 90 days on spray accessory items
  • Choose the best nozzle that fits your pressure washer needs:

    Pressure Washer Nozzle Selection Guide

Info & Guides

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Specifications

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Warranty / Certifications

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Customer Questions & Answers

7 Questions15 Answers

Customer Questions & Answers

Honda GX390 4,200 psi 4 GPM Belt Drive Gas Pressure Washer
Honda GX390 4,200 psi 4 GPM Belt Drive Gas Pressure Washer

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5 answers

Part for dewalt 4200 PSI dewalt power washer

This question is from Honda GX390 4,200 psi 4 GPM Belt Drive Gas Pressure Washer
Asked by
Milton, ma
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November 23, 2013
. I need to replace the hose wand and nozzles. Where can I purchase just these items.
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Answers (5)

Asked by
Chicago
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Home Improvement Profile: Professional
July 7, 2016
Answer: 
Contact the customer service line at 877-362-4271 for assistance with parts
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Asked by
chicago
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Home Improvement Profile: Professional
February 24, 2016
Answer: 
Parts for the Dewalt DXPW4240B can be purchased through you local Dewalt Service center or you can call 877-362-4271 and our customer service group will be glad to assist you with any thing you need.
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Asked by
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October 28, 2015
Answer: 
Here is a few sights that have what you need.
http://www.pressurewashersdirect.com
http://www.northerntool.com
These sights will have plenty of options for you.
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Asked by
Alexandria, VA
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Home Improvement Profile: DIYer
September 10, 2014
Answer: 
Home Depot sells Simpson 50 ft. Monster Hose Model # MH5038QC is a good replacement for the hose. It can handle up to 4,500 PSI. You will need an adapter.
For the tips, I can't find it on HomeDepot site. I know Amazon sells it for about $16 bucks. Search for "Pressure Washer Sprayer Nozzle Tip Replacement for DeWalt 4200".
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November 25, 2013
Answer: 
Thank you for your recent inquiry with The Home Depot. Unfortunately, this item is not available for replacement parts through The Home Depot. However, it may be beneficial to reach out to the manufacturer of the product. The manufacturer is Broan and their Customer Service department can be reached at 1-800-4-DEWALT. For more information, please visit your nearest Home Depot store or call HomeDepot.com Read More
Thank you for your recent inquiry with The Home Depot. Unfortunately, this item is not available for replacement parts through The Home Depot. However, it may be beneficial to reach out to the manufacturer of the product. The manufacturer is Broan and their Customer Service department can be reached at 1-800-4-DEWALT. For more information, please visit your nearest Home Depot store or call HomeDepot.com customer service at 1-800-430-3376. Read Less
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3 answers

Does this spray hot water?

This question is from Honda GX390 4,200 psi 4 GPM Belt Drive Gas Pressure Washer
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June 17, 2016
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Answers (3)

June 20, 2016
Answer: 
No
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Asked by
Chicago
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June 20, 2016
Answer: 
Brion, Thismachine is rated as a cold water machine and the maximum inlet water tempurature is set at 100 degrees
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June 19, 2016
Answer: 
No, the pressure washer does not spray hot water.
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2 answers

General Pump?

This question is from Honda GX390 4,200 psi 4 GPM Belt Drive Gas Pressure Washer
Asked by
Texas
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May 30, 2016
The product description says it has a General Pump in one place but in another it says it has a Comet AAA. What is the pump because it can't be both?
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Asked by
Chicago
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June 1, 2016
Answer: 
THE DXPW4240B currently comes with a AAA pump by Comet. The General pumps were used from 2010 to 2013
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May 31, 2016
Answer: 
Yes, the pressure washer has a general pump.
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2 answers

need to know if this model comes auto idle.

This question is from Honda GX390 4,200 psi 4 GPM Belt Drive Gas Pressure Washer
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January 1, 2016
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Asked by
Chicago
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March 22, 2016
Answer: 
The DXPW4240B utilizes a Honda GX390 engine which has Auto Idle and adjustable throttle.
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January 24, 2016
Answer: 
Yes, this is auto idle.
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Customer Reviews

Rated 4.1 out of 5 by 19 reviewers.
Rated 5.0 out of 5.0 by NIce Unit At first I thought there was an issue with the unit, it is shipped with the pressure down to the lowest level. Once I figured out I needed to turn the pressure back up, I was ready to go with more power than I needed. This is extremely powerful looks like it will take care of my needs. The Honda engine started right up first time out of the box. Very nice. August 25, 2015
Rated 4.0 out of 5.0 by Very Powerful, good value After 20 years of light use, my 3200 psi pressure gave it up. The new De Walt pressure washer has plenty of power and was easy to assemble. I went with the belt driven model in hopes of extending the life of the pump, which has been weak link in a pressure washer. I also purchased the garden hose inlet filter as additional insurance. Very pleased with the purchase. Would have given it five stars, but the instructions clearly state not to use chlorine bleach products as a cleaning agent, so I was unable to use my Jomax-bleach solution that is really needed for mold and mildew on the Texas Gulf coast. The ZEP pressure washer safe siding cleaner does not get the job done. When using an 18 foot telescoping wand, the pressure needed to remove mold and mildew without a bleach solution makes control unwieldy. May 20, 2015
Rated 2.0 out of 5.0 by Had problems soon after purchase The problem with this dewalt pressure washer was the belt pulley off the engine slipped outward off the shaft June 16, 2015
Rated 4.0 out of 5.0 by Research Pays Off! I had a Karcher 3500PSI Honda Engine for many years, constantly broke down (the pump). Finally decided to try this model. Did a lot of research. Warranty, price, PSI, and its from a company that should backup the product (both Dewalt and HD, yes I know its not made by Dewalt). Used the machine for about 15 hours continuously so far. Results, this is a powerful machine, and seems lightweight for the capacity. The wand uses the plug in's for pressure control width and intensity. Unfortunately, I do not see a valve to control water flow. There is a valve to control detergent flow. Frankly, for the price you aren't going to beat this one. The warranty seems good given that the pump units are prone to breakdown. Instructions were poor. Overall, I am so far pleased. August 14, 2014
Rated 3.0 out of 5.0 by Decent washer, although a bit misleading/confusing For two years the washer has worked well around the property (probably about 100 hours use). After receiving my unit, I was very interested in finding out what pump is actually on this unit. Good luck, Dewalt has at least 2, possibly 3 different pumps they use for this washer, and they wont be able to tell which manufacturer your pump is made by (even with serial and model numbers handy) nor any of the specs for water temps other than cold water (what is considered "cold"?). I was also curious as to the belt driven aspect of this unit as normally since gas engines turn 3600RPM, the belt driven units are "geared down" to run the pump slower thus decreasing bearing wear and temperature and increasing its life. It would appear from the outside of the housing that this is the case due to the shape of the belt guard. However upon taking the guard off, this is a 1:1 drive with no reduction... that pump is spinning the same speed as the motor, personally I feel a bit cheated on this aspect. At this point the only advantage is that theres no direct heat transfer/vibration from the engine (which is not the biggest concern IMO). This does come at the disadvantage of lost efficiency due to the inherent nature of more moving pieces (the belts and pulleys) Overall, it works well enough, but given the choice to do it again, I would go with a different brand machine with a CAT pump and one where the belt driven aspect serves a little more purpose. May 11, 2015
Rated 5.0 out of 5.0 by belt pressure washer Excellent washer has plenty of pressure to wash and can regulate pressure. February 17, 2015
Rated 4.0 out of 5.0 by very good homeowner unit Bulletproof engine and belt drive to reduce the temperature and vibrations at the pump. But last years model had an external pressure relief system. This one is internal and that was a surprise to me. They also switched from a general pump to something else, and the general is known for its forgiveness in not scavenging the supply hose if the flow is inadequate. Still, for the money, its the best belt drive out there. It also has no external incoming water filter, and that is something I find mandatory. Its only a few bucks to add so its not a deal breaker. February 18, 2014
Rated 5.0 out of 5.0 by Great features and price This unit really gets the job done. It's more compact than some other belt drive models that I looked at. I had some entrenched algae and mold on a wall where rain splashed up on it and this unit got into the stucco deep enough to get it out. The only improvements that I can think of would be to make the handle removable and make the wand holder such that it holds the wand up above the tire. It would also be nice if they offered a hose reel, as an accessory--a simple one that would just store the hose would suffice. July 9, 2011
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